Mat. doc. reversal not possible for single-unit batch &2 of material &1

What causes this issue?

You are trying to reverse a material document even though stock exists
somewhere else (another stock type, storage location and so on) for
single-unit batch &V2&. Because a single-unit batch can only exist in
one place in the system, your posting is not possible.

System Response

No goods movements are possible for single-unit batch &V2&

How to fix this error?

INCLUDE NA_SYSADMIN1

Procedure for System Administrators

Check whether stock exists for this single-unit batch somewhere else.
If it does, either this existing stock must be transferred to a
different batch, or the current posting must be made to a different
batch. Check the total stock of the batch against the conversion factor
of the batch. If there is a deviation, correct the factor for
conversion between the piece unit of measure and the base unit of
measure for the batch.

Error message extract from SAP system. Copyright SAP SE.